Portable pull up bar



FIG. 1 is a Perspective view of a portable pull up bar showing my new design in open position;

FIG. 2 is a Front view thereof;

FIG. 3 is a Back side view thereof;

FIG. 4 is a Right-side view thereof;

FIG. 5 is a Left-side view thereof;

FIG. 6 is a Top view thereof; and,

FIG. 7 is a Bottom thereof.

The broken lines are for the purpose of illustrating portions of the article that form no part of the claim. 

CLAIM I claim the ornamental design for a portable pull up bar, as shown and described. 